Zobrazeno 1 - 10
of 12
pro vyhledávání: '"A. V. Okrugin"'
Publikováno v:
Economic Geology. 115:1835-1853
Placer deposits in the Siberian platform are closely associated with well-known platiniferous intrusions (Kondyor, Inagli, Noril’sk, Chiney, and Guli) but there are also abundant platinum-group mineral (PGM) placers of large areal extent in the riv
Publikováno v:
Доклады Академии наук. 484:716-720
Typical features of platinum group minerals (PGMs) and the results of 190Pt–4He dating of the Fe–Pt solid solutions are presented for complex gold–platinum–diamond placers with unidentified sources of the Anabar River basin. For the first tim
Publikováno v:
Doklady Earth Sciences. 484:134-137
Typical features of platinum group minerals (PGMs) and the results of 190Pt–4He dating of the Fe–Pt solid solutions are presented for complex gold–platinum–diamond placers with unidentified sources of the Anabar River basin. For the first tim
Publikováno v:
Russian Geology and Geophysics. 59:1301-1317
We consider the mineralogical and geochemical features of the rocks of the Inagli dunite–clinopyroxenite–shonkinite massif with platinum–chromite and unique jewelry Cr-diopside mineralization, which is a reference object of concentric zonal com
Publikováno v:
ARCTIC AND SUBARCTIC NATURAL RESOURCES. 25:36-52
Autor:
Richard E. Ernst, A. V. Okrugin, Michael A. Hamilton, Roman Veselovskiy, Sandra L. Kamo, Chad N Rogers, Vladimir Pavlov, Kevin R. Chamberlain, Ulf Söderlund
Publikováno v:
Russian Geology and Geophysics. 57:653-671
A new large igneous province (LIP), the 1501 ± 3 Ma Kuonamka LIP, extends across 700 km of northern Siberia and is linked with coeval dikes and sills in the formerly attached São Francisco craton (SFC)–Congo craton to yield a short-duration event
Autor:
A. V. Okrugin, Kenneth L. Buchan, Wouter Bleeker, J. A. Hanes, Kevin R. Chamberlain, Dmitry P. Gladkochub, Ulf Söderlund, A. N. Didenko, Richard E. Ernst, A. S. Mekhonoshin, A N LeCheminant, Michael A. Hamilton, T. B. Kolotilina
Publikováno v:
Nature geoscience. 2016. Vol. 9, № 6. P. 464-469
Precambrian supercontinents Nuna-Columbia (1.7 to 1.3 billion years ago) and Rodinia (1.1 to 0.7 billion years ago) have been proposed. However, the arrangements of crustal blocks within these supercontinents are poorly known. Huge, dominantly basalt
Autor:
Alexander V. Okrugin
Publikováno v:
The Canadian Mineralogist. 49:1397-1412
Based on the studies of paragenetic assemblages of platinum-group minerals (PGM) from placers and chromitite ores associated with zonal-ring dunite intrusions in the Aldan Shield, on the Siberian platform, a novel model for the PGM formation is offer
Autor:
A. V. Okrugin, E.D. Izbekov, Olga V. Koroleva, K.A. Bekrenev, O.B. Oleinikov, A.I. Zaitsev, V.M. Mishnin, Z.A. Altukhova, A.P. Andreev, A.P. Smelov, S.A. Babushkina, A.A. Surnin
Publikováno v:
Russian Geology and Geophysics. 51:121-126
This paper reports new petrographic and mineralogical data on the Manchary kimberlite pipe, which was discovered south of Yakutsk (Central Yakutia) in 2007–2008, 100 km. The pipe breaks through the Upper Cambrian carbonate deposits and is overlain
Publikováno v:
Doklady Earth Sciences. 410:1044-1047